Benedikt Stufler (27/01/17)

Anders Claesson, January 24, 2017

Math Colloquium

Speaker: Benedikt Stufler, École normale supérieure de Lyon

Title: The asymptotic geometric shape of random combinatorial trees

Location: TG-227 (Tæknigarður, 2. hæð)
Time: Friday 27 January at 13:20

Abstract:

In his pioneering papers in the early 90s, Aldous established the continuum random tree (CRT) as the scaling limit of random labelled trees. He conjectured that the CRT also arises as scaling limit of trees considered up to symmetry. The convergence of random Pólya trees, that is, unlabelled rooted trees, was confirmed around 20 years later by Haas and Miermont, and we discuss an alternative proof by Panagiotou and the speaker. The second part of the talk treats random unlabelled unrooted trees and discusses a very general result that allows for a transfer of asymptotic properties of rooted trees to unrooted trees, in particular the convergence toward the CRT.